高速公路改扩建路基拓宽技术措施研究综述

针对高速公路改扩建时容易产生新老路基不均匀沉降这一现象，分析了路基病害的原因和损坏机理，提出了切实有效的处治措施和施工时应注意的关键技术问题，从而保证新老路基的有效结合，提高公路运营质量。

Summarization on technical measure of embankment widening in the reconstruction and expansion of highway

In light of differential settlement of the old and new roadbed in the reconstruction and expansion of highway, it analyzes causes of defects and damage mechanism of embankment, and puts forward effective treatment measures and key technical problems noted in construction. Thus, it ensures effective integration of the old and new roadbed and improves the quality of highway operations.